Clamp pob robm tibs



May 30, 3 J. A. LYNCH El AL.

CLAMP FOR-FORM TIES Filed June 16 1950 2 Sheets-Sheet 1 y 30, 1933- V J. A. LYNCH ETAL 9 19 CLAMP FOR FORM TIES Filed June 16 1950 2 Sheets-Sheet 2 Patented May 30, 1933 I um s'rA'ras PATENT orries TAKES A. LYNCH AID DEN'SKOBE H. SANDERS, 0! I08 AHGELE, CALIFORNIA cmxr F03 F03! TIES Application filed June 18,

This invention relates to a clamp for form ties used in concrete construction work.

It is an object of the invention to provide a clamp adapted to act as a wedge for the purpose of drawing the tie taut, the construction of the clamp being such as to hold the end ofthe tie from spreading and becoming accidentally disengaged from the clamp.

A further object is to provide a clamp which can be quickly placed in engagement with a tie or disengaged therefrom.

Another object is to provide clamps which are adapted to be driven into holding positions at which time they will act to-prevent the form containing the tie from spreading.

With the foregoing and other 0 jects in view which will up proceeds, the invention resides in the comination and arrangement of parts and in go the details of construction hereinafter de-' scribed and claimed, it bein understood that changes in the recise em diment of the invention herein isclosed may be made within the scope of what is claimed without de- 25 partin from the spirit of the invention.

In t e accom anyin drawings the preferred forms 0 the invention have been shown.

In said drawingls Figure 1 is a p an view of a portionpf a concrete form equipped with the present improvements.

Figure 2 is an elevation showing the clamp combined with a tie. I

Figure 3 is a section on line 3-3, Figure 2.

Figure 4 is a perspective view of the p.

Figure 5 is a view similar to Figure i showin a modified structure.

iigure 6 is an elevation of the clamp in (in en agement with a tie. v V

Figure 7 is a side view thereof. Fi re 8 is a perspective view of the i Re rring to the figures by characters of reference, 1 desi' ates a concrete form e studd' 2 of which is reinforced by timbers or wh ers 3 such as commonly employed. At suitable points tie rods 4 are extended transversely through the form, the ends of the rods being bent to form hooks 5.

The clamp shown in Figures 1 to t inar as the description 1930. Serial s... 461.450.

elusive consists of an angle bracket or body 6 having a transverse slot 7 in one arm thereof for the reception of one of the books 5 which, when seated therein, will be prevent ed from spreadin open. The other arm of 55 the bracket has a ongitudinal slot 8 in which is slidably mounted a wedge 9. A retainin lug 10 can be struckv from the small en of the wedge to prevent its withdrawal from the bracket.

After a tie rod has been placed in a form, the elongated hooks are inserted into slots 7 and the wed es 9 are then driven downward- 1 through t e hooks. The, tie will thus berawn taut and the brackets pressed against 5 the form to hold it from spreading.

In Figures 5 to 8 another form of the device has been illustrated. Instead of-making the clamp of a bracket with a separate-wedge, the entire device can be made in one piece. m In this structure the body of the clamp, which has been indicated at 11, has a 10m tudinal slot 12. A tongue 13 in the form 0 an elongated wed is made. integral with the body at one en and is extended longitudinally within the slot, its small end being spaced from the adjacent and wall of the slot.

This form of clamp is used in substantially the same way as the one first described. The

hooked end 14 of the tie rod 15 is inserted into the slot 12 across the smallend of the wedge. The wedge is then driven lo 1 tudi Bally so as to be forced into the hook, tereby pulling the tie taut. a

In both forms of the device the free end portion of each hook is restrained by the adjacent wall ofthe slot in which it is seated so. that the book can not spread when the tie is subjected to tensile strain. When it is des red to remove a clamp it is merely necessary to block the wedging element out of the en hook. llhe project ing end ofthe tie can then be cut oh. if desired, only one clamp can be removed and the adjacent end of the tie can be cut ofi. w The wed ing elementof the other clam can then be riven into the hook so as to pu l the tie rod longitudinally a short distance to loosen it. The rod can then withdrawn from the moulded structure? 3 t It is to be understood that instead of providing hooks at the ends of the rods, loops may be emFloyed. Consequently the term hook in the claims is designed to cover 5 broadly either a loop or a hook.

What is claimed is:

A tie clamp including an angle body for engagement with a form, said bod having a tie receiving slotin one arm an a we go containing slot in its other arm a tie engaging wedge slidably engaging the ,body and movable in the slot provided therefor, and means for holding the wedge against removal from its slot.

In testimony that we claim the foregoing as our own; we have hereto afiixed our signatures.

JAMES A. LYNCH. DENSMORE H. SANDERS. 

